in 10-inch skillet, cook ground beef, bell peppers and onion over medium-high heat for 5 to 7 minutes or until beef is thoroughly cooked, stirring frequently. Drain. stir in 1/4 cup of the salad dressing. remove skillet from heat.

cut Italian bread in half horizontally. Spread remaining 1/4 cup salad dressing on cut sides of bread. Place both halves, cut side up on ungreased large cookie sheet. Broil 4 to 6 inches from heat for 1 to 2 minutes or until lightly toasted.

remove bread from broiler. Spread beef mixture on cut halves of bread. Top with cheese.

return to broiler; broil 4 to 6 inches from heat for 2 to 3 minutes or until cheese is melted. Cut each half into 2 pieces.